74FST3861QSR

Overview

The onsemi 74FST3861QSR is a 10-bit bus switch operating between 4.0 and 5.5 Volts. It features extremely low RON of 4 ohms typical and nearly zero propagation delay of less than 0.25 ns maximum. The device adds no noise or ground bounce to the system, with control inputs compatible with TTL/CMOS logic levels.

Feature Summary

• Extremely low ON resistance for minimal signal loss
• Nearly zero propagation delay through the switch
• No circuit bounce or ground noise generation
• TTL/CMOS compatible control inputs

Applications

• High-speed data bus switching applications
• Portable battery-powered systems requiring low standby current
• Automotive electronics utilizing FST logic families
• Industrial equipment requiring robust signal integrity

Procurement Notes

Verify the specific suffix 'QSR' against official documentation to confirm tape and reel packaging specifications and quantity per reel. Ensure the component meets required environmental standards and lead-free requirements if applicable to your manufacturing process. Cross-reference ordering information directly with manufacturer datasheets to avoid discrepancies in package type or shipping units.

Selection Notes

Select this component when designing high-speed digital interfaces requiring minimal signal degradation. The 10-bit width accommodates parallel data buses efficiently. Consider the low standby current for power-sensitive designs. Verify voltage compatibility within the 4.0V to 5.5V range for your specific application environment.

Part Context

This device belongs to the FST (Fast Switching Technology) logic family, designed for high-performance applications. It offers pin-for-pin compatibility with other industry-standard bus switches like QS3861, FST3861, and CBT3861, facilitating direct replacements in existing designs without layout modifications.

Replacement Considerations

Pin-for-pin compatible substitutes include QS3861, FST3861, and CBT3861. Verify electrical characteristics match your design requirements before substitution.

FAQ

Is the 74FST3861QSR suitable for automotive applications?

Yes, the datasheet lists automotive electronics as a valid application area for this device.

What is the maximum propagation delay of this bus switch?

The maximum propagation delay is less than 0.25 ns under specified conditions.